The 68-year-old grandfather of 12 who was killed yesterday by a Framingham police SWAT team in an early-morning drug raid was a retired MBTA worker described by shocked neighbors as the “nicest guy in the world.”

Eurie Stamps was not the target of the search warrant, according to the Middlesex District Attorney’s Office, and his death at the hands of police is under investigation.

Authorities said Stamps lived at the house with a woman whose son and another man were arrested in the raid on drug charges.